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Grade transitions with foam
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I use 2" foam for my layout,but 1" for the grades.I cut the actual shape of the roadbed[save the edges,I'll explain in a minute].Cut it out of a cardboard template,and trace it to the foam.I make the ends relatively long.I trace the end of the riser onto the top of the bottom piece of foam,and cut it out to inlet the foam into the beginning of the grade.Once you get it glued down and fastened,you can can bend it up from thr parent foam,and make a perfect grade and transition,with little or no sanding,and do the same thing on the top.You can flex it up a little,and work some glue down the sides,and use some sheetrock screws drilled down into the bottom foam to draw it down into the foam to set the height.[make sure it's a light interferance fit] Where you can,block it with styrofoam blocks.Now you can use the cutoffs butted up right against the grade for the hillside.If it's a high grade,you can trace it onto a piece of 2" to make up the height change,and toenail a few screws into it to really make it stable..
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